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US 9,102,074 B2Granted
Log rest with rack and pinion system
AssigneeNorwood Industries Inc.
InventorPeter Dale
Life of this patent
Estimating the term…
Abstract
A new log support and clamp system (log rest) for a portable sawmill, having a log rest and a log dog. The log rest features a rack and pinion for adjusting a vertical position of the log rest using an actuation mechanism located on the operator's side of the portable sawmill, which improves the ability of the user to affix the log in place for sawing. Also, a portable sawmill having such a log rest.
Claims12
A log rest assembly comprising:
- a vertically extending log rest post;
- a post housing assembled with the post, said post being vertically displaceable therewith;
- and
- a rack secured to the post and a pinion secured to the post housing, the rack and pinion being operable to raise and lower the post by vertically sliding the post in relation to the post housing;
- wherein the rack and pinion comprises a tensioned chain attached to the log rest assembly;
- and a ratcheted wheel attached to the post housing for engaging teeth on the tensioned chain.
3 more elements
A log rest assembly comprising:
- a vertically extending log rest post;
- a post housing assembled with the post, said post being vertically displaceable therewith;
- and
- a rack secured to the post and a pinion secured to the post housing, the rack and pinion being operable to raise and lower the post by vertically sliding the post in relation to the post housing;
- wherein the post has a wheel at a top end.
2 more elements
A log rest assembly comprising:
- a post;
- a post housing, said post being vertically displaceable therein;
- and
- a rack and pinion for raising and lowering the post, wherein the rack and pinion comprises:
- a tensioned chain attached to the log rest assembly;
- and
- a first ratcheted wheel attached to the post housing for engaging teeth on the tensioned chain;
- and
- an actuation mechanism comprising:
- a second ratcheted wheel;
- a rotatable shaft extending from the first ratcheted wheel to the second ratcheted wheel;
- and
- a handle attached to the second ratcheted wheel for actuating the first ratcheted wheel,
- wherein rotation of the handle causes the first ratcheted wheel to traverse the chain, thereby raising or lowering the vertical position of the post.
11 more elements
Dependencies are inferred from the claim text.